/**
 * 
 * Copyright (C) 2011 Cody Stoutenburg . All rights reserved.
 *
 *       This program is free software; you can redistribute it and/or
 *       modify it under the terms of the GNU Lesser General Public License
 *       as published by the Free Software Foundation; either version 2.1
 *       of the License, or (at your option) any later version.
 *
 *       This program is distributed in the hope that it will be useful,
 *       but WITHOUT ANY WARRANTY; without even the implied warranty of
 *       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *       GNU Lesser General Public License for more details.
 *
 *       You should have received a copy of the GNU Lesser General Public License
 *       along with this program; if not, write to the Free Software
 *       Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. 
 * 
 */
package ca.usherbrooke.behaviours.controller.request;

import jade.core.AID;
import jade.lang.acl.ACLMessage;
import jade.lang.acl.MessageTemplate;
import jade.lang.acl.UnreadableException;

import java.io.IOException;

import ca.usherbrooke.agent.controller.BasicAgentLauncher;
import ca.usherbrooke.agent.controller.shared.IAgent;
import ca.usherbrooke.agent.controller.shared.IMessage;
import ca.usherbrooke.behaviours.BasicCyclicBehaviour;
import ca.usherbrooke.utils.ExceptionTool;

/**
 * @author Cody Stoutenburg
 * 
 */
public class MessageBehaviour extends BasicCyclicBehaviour<BasicAgentLauncher> {
	private static final long serialVersionUID = 1L;

	private static final String PROTOCOL_COMMUNICATION = "proto.communication";
	private static final MessageTemplate TEMPLATE_MESSAGE = MessageTemplate
			.MatchProtocol(PROTOCOL_COMMUNICATION);

	private final IAgent agent;

	/**
	 * @param a
	 */
	public MessageBehaviour(BasicAgentLauncher a, IAgent agent) {
		super(a);
		this.agent = agent;
	}

	public void sendMessage(Long entityGuid, IMessage msg) {
		AID agent = new AID(entityGuid.toString(), false);
		ACLMessage message = new ACLMessage(ACLMessage.REQUEST);
		message.setSender(this.getAgent().getAID());
		message.setProtocol(PROTOCOL_COMMUNICATION);

		message.addReceiver(agent);
		try {
			message.setContentObject(msg);
		} catch (IOException ex) {
			ExceptionTool.showError("problem when sending message", ex);
		}

		this.getAgent().send(message);
	}

	@Override
	public void action() {
		ACLMessage msg = this.getAgent().receive(TEMPLATE_MESSAGE);
		if (msg != null) {
			while (msg != null) {
				try {
					agent.doReceiveMessage((IMessage) msg.getContentObject());
				} catch (UnreadableException ex) {
					ExceptionTool.showError(ex);
				}
				msg = this.getAgent().receive(TEMPLATE_MESSAGE);
			}
		} else {
			block();
		}
	}
}
